Combine the onion, fennel seed, yellow mustard seed, caraway seed, coriander, cloves, salt, sugar, vinegar, and mirin in a medium saucepan, and bring to a boil over medium-high heat. Reduce the heat to medium-low, and simmer until the sugar is dissolved. Remove from heat. Separate the sliced plums by variety into airtight containers. Pour the pickling liquid over plums. Chill uncovered for 2 hours before serving. Cover once the liquid is chilled, and store refrigerated for up to 2 weeks.

Tips & Techniques

Mirin, Japanese sweet rice wine, addssubtle flavor to dishes. Find it in the Asianfoods section of most grocery stores. If youcan't find it, dissolve 1/4 cup sugar in 1 cupvermouth as a substitute.

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